CN1293249C - Apparatus and method for detecting malfunction of a clutch of washing machine - Google Patents
Apparatus and method for detecting malfunction of a clutch of washing machine Download PDFInfo
- Publication number
- CN1293249C CN1293249C CNB038009250A CN03800925A CN1293249C CN 1293249 C CN1293249 C CN 1293249C CN B038009250 A CNB038009250 A CN B038009250A CN 03800925 A CN03800925 A CN 03800925A CN 1293249 C CN1293249 C CN 1293249C
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- motor
- clutch
- cam
- clutch motor
- band clutch
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/40—Driving arrangements for driving the receptacle and an agitator or impeller, e.g. alternatively
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/44—Current or voltage
- D06F2103/46—Current or voltage of the motor driving the drum
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/30—Driving arrangements
- D06F37/304—Arrangements or adaptations of electric motors
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
Device and method for detecting malfunction of a clutch in a washing machine, the device including a clutch including a coupling for transmission of a power from a motor to a washing shaft or a spinning shaft, a clutch motor (60) for providing a power to the coupling, a switch for controlling the coupling, and a cam (600) fitted to be rotatable with the clutch motor for turning on/off the switch in response to the rotation, a power supplying part for supplying a voltage to the motor and the clutch motor (60), a pulse counting part for counting a number of pulses of a voltage supplied to the clutch motor from the power supplying part, and a microcomputer for repeating a process in which the clutch motor is stopped for a second set time period (S20) and operated again if the switch is not switched for a first set time period from a time the clutch motor is put into operation, and informs to a user that the clutch is in malfunction if the switch is not switched while the process is repeated equal to or more than a set times, thereby determining the clutch of being out of order and informing a result of the determination to a user.
Description
Technical field
The present invention relates to a kind of washing machine, particularly relate to the apparatus and method of the fault that is used for detecting the washing machine clutch.
Background technology
Usually, washing machine is by the emollescence of cleaning agent, agitator rotates the circulation of the water cause and the friction that produces, and agitator is removed attached to the dirt on clothing, the bed clothes etc., wherein the impact that clothing applies, the value volume and range of product of clothing can arrive by sensor, so that washing mode automatically is set, suitably injects washings according to the value volume and range of product of clothing, and under control of microcomputer, realize washing.
The automatic washing machine of prior art turns round with two kinds of patterns, the first is delivered to wash shaft or rotating shaft with the rotational power of drive motors with dynamic conveyor belt or pulley, with rotating mixer or rotary dehydration barrel, another is under the speed control of brshless DC motor, washtub and rotary barrel rotate with different speed when washing and rotary dehydration.
But there is a defective in the washing machine of this kind prior art, can't detect the fault of the clutch that is used to change power transfer path exactly, can not prevent the damage of the washing machine that clutch causes.And even if motor stops, under the situation of clutch damage, the inefficacy of washtub brake apparatus also can be dangerous to the user.
Summary of the invention
An object of the present invention is to provide a kind of apparatus and method that are used for detecting the fault of washing machine clutch, to solve the defective that prior art exists, wherein, can detect the fault of clutch, and with the result notification user who detects, with fault and the damage that prevents clutch.
Purpose of the present invention can realize that this device comprises clutch by a kind of device that is used for detecting the fault of washing machine clutch is provided, and this clutch comprises coupling, is used for selectivity motor power is delivered to wash shaft or rotating shaft; The band clutch motor is used to drive coupling; And cam, be assembled to rotationally on the band clutch motor, being used for the response rotation provides switching signal; Electric energy is supplied with part, is used for to band clutch motor service voltage; The step-by-step counting part is used to calculate from electric energy and supplies with the umber of pulse that part supplies to the voltage on the band clutch motor; And microcomputer, be used for repetition one process, if cam can not provide a switching signal in the first setting-up time section in this process, the band clutch motor just stops one second setting-up time section, and then running, equal or still can not provide switching signal if last till the number of repetition of this process, just determine that clutch breaks down more than set point number.
In another aspect of this invention, provide a kind of device that is used for detecting washing machine clutch fault, this device comprises clutch, and this clutch comprises coupling, is used for motor power is delivered to wash shaft or rotating shaft; The band clutch motor is used for providing power to coupling; Switch is used to control coupling; And cam, be assembled to rotationally on the band clutch motor, be used to respond rotating opening/close switch; Electric energy is supplied with part, is used for to motor and band clutch motor service voltage; The step-by-step counting part is used to calculate from electric energy and supplies with the umber of pulse that part supplies to the voltage on the band clutch motor; And microcomputer, be used for repetition one process, if switch can not switch in the first setting-up time section of band clutch motor entry into service in this process, the band clutch motor just stops one second setting-up time section, and then running, if and the number of times that this process repeats equal or during more than a set point number switch still can not switch, just notify user's clutch to break down.
Provide a kind of device that is used for detecting the fault of the washing machine clutch with motor and clutch more on the one hand of the present invention, this device comprises the speed sensitive part, is used for the rotating speed of detection-sensitive motor; Microcomputer is used for according to after motor braking is finished, and the clutch fault is determined in the motor interior acceleration again of section at the fixed time; And the display part, being used for demonstration information under system controlled by computer, the notice clutch is undesired.
In still another aspect of the invention, provide a kind of device that is used for detecting the fault of washing machine clutch, this device comprises clutch, and this clutch comprises coupling, is used for from motor transmission of power to wash shaft or rotating shaft; The band clutch motor is used for supplying with power to coupling; And the clutch drive part, be used for the rotating band clutch motor; The voltage sensing part is used for sensing and supplies with the voltage that part supplies to the motor-driven part from electric energy; Coupling location sensing part is used for the position of sensing coupling; And microcomputer, when the level that partly senses by voltage sensing is higher than the setting level, be used for determining that clutch is undesired.
And in another aspect of this invention, provide a kind of method that is used for detecting the fault of washing machine clutch, comprise the steps: that (a) makes the entry into service of band clutch motor, with rotating cam; (b) detect cam whether switching signal is provided; (c) repeat a process, if cam can not provide switching signal in the first setting-up time section in this process, the band clutch motor just stops one second setting-up time section, and then running, and (d) when repeating described process, if cam still can not provide error message then show an error message above set point number.
In another aspect of this invention, provide a kind of method that is used for detecting the fault of washing machine clutch, comprised the steps: that (a) makes the entry into service of band clutch motor, with rotating cam; (b) whether sense switch switches; (c) repeat a process, if switch can not switch in the first setting-up time section in this process, the band clutch motor just stops one second setting-up time section, and then running, and the number of repetition of calculating this process; (d) when repeating described process,, show error message if switch still can not provide switching above a set point number.
Provide a kind of method that is used for detecting the fault of washing machine clutch more on the one hand of the present invention, comprised the steps: (a) when the user sends brake command, determined that motor braking finishes; (b) when motor braking is finished, determine the acceleration again of motor in setting-up time; (c) if motor quickens again, determine that clutch is undesired, and demonstration information, the notice clutch is undesired.
In still another aspect of the invention, provide a kind of method that is used for detecting washing machine clutch fault, comprised the steps: that (a) sensing supplies to the level of motor-driven part from electric energy supply part; (b) with the level and the contrast of setting level that sense; And if the level that (c) senses is higher than the setting level, determine that clutch is undesired.
Description of drawings
Included accompanying drawing can provide further understanding of the invention, and it shows embodiments of the invention, and is used for explaining principle of the present invention together with specification.Among the figure:
The schematically illustrated washing machine according to a preferred embodiment of the invention of Fig. 1;
Fig. 2 shows the clutch among Fig. 1 and the cutaway view of motor respectively;
Fig. 3 illustrates the stereogram of band clutch motor according to a preferred embodiment of the invention;
Fig. 4 is the exploded perspective view of Fig. 3;
Fig. 5 A～5C shows when band clutch motor operative relation between cam and the switch when being driven;
Fig. 6 shows and is used to illustrate the chart of being with clutch motor, cam, reaching operative relation between the switch;
Fig. 7 shows the block diagram of device that is used to detect the clutch fault according to a first advantageous embodiment of the invention;
Flow chart shown in Fig. 8 and 9 is expressed the step of method that is used to detect the clutch fault according to a first advantageous embodiment of the invention respectively;
Figure 10 shows the block diagram that is used to detect the device of clutch fault according to a second, preferred embodiment of the present invention;
Flow chart shown in Figure 11 shows the step of the method for the fault that is used to detect clutch according to a second, preferred embodiment of the present invention;
Figure 12 shows the block diagram of device that is used to detect the clutch fault according to the 3rd preferred embodiment of the present invention;
Figure 13 shows the position of the clutch coupling of impeller rotary mode and tube rotary mode; And
Flow chart shown in Figure 14 shows the step of method that is used to detect the clutch fault according to the 3rd preferred embodiment of the present invention;
The specific embodiment
Referring now to embodiment shown in the drawings to a preferred embodiment of the present invention will be described in detail.In the description of embodiment, identical parts are represented with identical reference marker, and the description that repeats will be omitted.Fig. 1 schematically shows a kind of washing machine according to a preferred embodiment of the invention.
Referring to Fig. 1, this automatic washing machine comprises body 1, is installed in the outer bucket 2a in the body 1, and is installed in rotation on the interior bucket 2b in the outer bucket 2a.Middle part, bottom in interior bucket 2b inside is equipped with agitator 3, be used for when washing and rotary dehydration about alternate rotation.
This automatic washing machine also comprises rotating shaft 5, is used for rotational power is delivered to interior bucket 2b, wash shaft 4, be used for rotational power is delivered to agitator 3, and clutch 6, be used for according to being in wash cycle or cycle of rotation, with the transmission of power of motor 7 to wash shaft 4 or rotating shaft 5.
Clutch 6 has as lower device.Referring to Fig. 2 A and 2B, the below of bucket 1 has band clutch motor 60 outside, on the driving shaft 602 of band clutch motor 60 cam 600 is installed.Lever guide 30 is fixed on the spring bearing body 20, lever 8 has recess 800, and this recess has inclined-plane 801, and the plane 802 that extend in the horizontal direction 801 lower end from the inclined-plane, be used for when band clutch motor 60 is driven, carrying out rectilinear motion by the guiding of lever guide.Between the cam 600 of being with clutch motor 60 and lever, have connecting rod 17, be used for when band clutch motor 60 starts, lever 8 being pulled to band clutch motor 60.Between the projection 803 of end of lever guide 30 and lever 8, be fastened with back-moving spring 14, be used for providing restoring force to lever 8 when the end of lever guide 30 is removed when lever 8.Cylindrical hollow projectile 9 is used for engaging with the recess 800 of lever 8 when rotary dehydration, and when forwarding washing mode to, 801 move down along the inclined-plane, and 802 downside stops on the plane up to projectile 9.Plunger 10 is installed in the inside of projectile 9, and can along on the guide groove 900/move down, and between projectile 9 and plunger 10, have a damping spring 11.Has of the circumferencial direction formation of the connection brake 22 of the gear teeth 221 along axle spring bearing spare 20, and be fixed on the downside of a spring bearing spare 20, one side of wishbone 12 front ends is articulated in the lower end of plunger 10, and the lower end that a bit is connected in the support 220 that connects brake 22 belows of middle part hinge, be used for when plunger 10/following is mobile can be around this middle part a bit make seesaw movement.Coupling 15 can be gone up/descend movably and install along rotating shaft 5, to switch the delivering path of rotary power.Connector assembly 16 is used for the rotary power of rotor 7b is delivered to wash shaft 4.
Referring to Fig. 3 and 4, the cam 600 on the driving shaft 602 moves with driving shaft 602, and stops at the place that stops of driving shaft 602.
The movement relation of cam 600 and switch 650 will be described below.When cam 600 was in the corresponding to state of initial point, switch 650 was in closed condition.Shown in Fig. 5 C, be meant the state that is in initial point with axle 601 bars that are connected of cam 600 with the corresponding to state of the initial point of cam 600.
When prepare switching power transmission path when washing, 60 entrys into service of band clutch motor are with counter clockwise direction rotating cam 600.Because the projection 650a on the switch 650 is on the cam concave surface 600a, switch 650 is in closed condition, reaches 150 ° up to the corner of cam 600 from initial point.
Then, along with the corner of cam 600 reaches 150 ° from initial point, because the projection 650a on the switch 650 leaves cam concave surface 600a, switch 650 is opened.
When the corner of cam 600 when initial point reaches 150 °, the gear teeth 151 of coupling 15 and the gear teeth 221 that connect brake 22 begin engagement.
Then, referring to Fig. 5 A, when cam 600 arrives when initially lighting 170 ° position, band clutch motor 60 is closed.Band clutch motor 60 is for more reliable powershift is provided to washing mode closing with the corresponding to point of the support level of cam 600.
Simultaneously, when after finishing washing, carrying out rotary dehydration, need get back to and the corresponding to position of initial point.For this reason, when powershift arrived the rotating cylinder pattern, band clutch motor 60 started once more, with counter clockwise direction rotating cam 600.In this case, shown in Fig. 5 B, switch 650 stays open state, crosses in the counterclockwise direction from the point (lighting 158 ° point from keeping in the counterclockwise direction) of initially lighting 328 ° up to cam 600, when the projection 650a on the switch 650 arrived cam concave surface 600a, switch 650 cut out.
Then, even switch 650 cuts out, band clutch motor 60 also stays open state, reaches and the corresponding to point of initial point up to cam 600 under system controlled by computer, and at this moment, band clutch motor 60 is closed.In this case, calculate the umber of pulse that is added in the AC energy on the band clutch motor 60, and reach and the corresponding to point of initial point, keeps operating condition always the time after clutch motor 60 is closed from switch 650 of being with to cam 600.By using umber of pulse, can control band clutch motor 60.
Simultaneously, when cam 600 is in the state of initial point, not only the gear teeth 221 of the gear teeth 151 of coupling 15 and connection brake 22 are thrown off, and simultaneously, last profile of tooth 150a and lower toothed 150b also respectively with female connector 16b top outer circumference surface on profile of tooth 161b, and the profile of tooth of rotating shaft 5 bottoms engagement.By the synchronous rotation of wash shaft 4 and rotating shaft 5, realize rotary dehydration.
Referring to Fig. 2 B, before beginning washing, clutch 6 of the present invention is in closed condition, do not have this moment electric energy to supply on the band clutch motor 60, and coupling 15 is in the state that moves downward.In this case, projectile 9 is along the inclined-plane 801 of lever 8 and be positioned in the recess 800.
In this state, when electric energy supplies on the band clutch motor 60, when starting band clutch motor 60, the driving force of band clutch motor 60 is sent to cam 600, connecting rod 17 moves towards band clutch motor 60 with the rotation of cam 600, and in view of the above, lever 8 pulls to band clutch motor 60 along lever guide 30.In this case, the back-moving spring 14 that is positioned at lever guide 30 rear ends opens.
Simultaneously, when cam 600 rotated, projectile 9 beginnings contacted with the inclined-plane 801 of lever 8, and move downward along this inclined-plane 801, and up to shown in Fig. 2 A, projectile 9 arrives the below on the plane 802 of lever 8, and at this moment, cam 600 arrives support level.
Simultaneously, with the motion towards the band clutch motor of the rotation of cam 600 and lever 8, projectile 9 moves downward.Projectile 9 compression damping springs 11, and in view of the above, the plunger of installing movably along gathering sill 900 10 also moves downward.
After this, with moving downward of plunger 10, the bar 12 that is pivotally connected on the plunger 10 rotates around the holding pin 12b of the point that is positioned at bar 12 middle parts, and crosses the bracing frame 220 that connects brake 22 in the counterclockwise direction.
When bar 12 in the counterclockwise direction when holding pin 12b rotates, an end of bar 12 begins to contact with coupling 15, and on the top of axle, along pushing away coupling 15 on the rotating shaft 5.In view of the above, shown in Fig. 2 A, when with powershift after washing mode is finished, the gear teeth 151 on coupling 15 tops are meshed with the gear teeth 221 on connecting brake 22.
When the gear teeth on the coupling 15 151 when the gear teeth 221 on connecting brake 22 are meshed, coupling 15 is not subjected to the constraint of coupler assembly 16, thereby, when rotor 7b rotates, have only wash shaft 4 rotations.Also promptly, in when washing because the profile of tooth engagement on 15 of couplings and rotating shaft 5 outer circumference surfaces, and not with the profile of tooth engagement on the female connector 16b top of wash shaft 4 engagements, so be sent to agitator 3 by 4 of wash shaft from the rotational power of rotor 7.
The gear teeth on the coupling 15 151 with connect brake 22 on the state of the gear teeth 221 engagement under, by connecting the gear teeth 221 on the brake 22, can prevent the rotation of coupling 15.
Referring to Fig. 2 A, when laundry is carried out, after finishing, washing needs power transmission path is switched to the rotating cylinder pattern, and when dewatering to be rotated, electric energy supplies on the band clutch motor 60 once more, with rotating band clutch motor 60, and rotating cam 600.
When the cam 600 of band clutch motor 60 turned to the rotary dehydration position, by the restoring force of back-moving spring 14, lever 8 was removed from band clutch motor 60.In view of the above, shown in Fig. 2 B, after the answer of lever 8 was finished, the projectile 9 that contacts with the plane 802 of lever 8 was positioned at the recess 800 on band inclined-plane 801 on the lever 8.
When projectile 9 moved upward with the motion of lever 8, the compression of damping spring alleviated, and in view of the above, moved on the guide groove 900 of plunger 10 in the projectile 9.Along with moving on the plunger 10, be pivotally connected to the bar 12 on the plunger 10, when from last (Fig. 2 A) with the aid of pictures, rotate around holding pin 12b along clockwise direction.
When coupling fully moves down, the engagement of the profile of tooth of profile of tooth 150a on coupling 15 inner peripheral surfaces and 150b and profile of tooth 161b and rotating shaft 5 bottoms, thus when rotor 7b rotates,, realize rotary dehydration along with the rotation of wash shaft 4 and rotating shaft 5.
First embodiment
Referring to Fig. 7, the device that is used for detecting the fault of washing machine clutch of the present invention comprises that electric energy supplies with part 71, step-by-step counting part 72, microcomputer 100, motor 7, clutch 6 and display part 700.
Referring to Fig. 3 and 4, clutch 6 comprises band clutch motor 60, be used for coupling 15 correctly/be moved to washing or rotary dehydration circulation, and cam 600 is pivotally mounted on the band clutch motor 60, and the switching signal that provides response to rotate is provided.
Electric energy is supplied with part 71 to motor 7 and band clutch motor 60 service voltages, and step-by-step counting part 72 countings are supplied with the umber of pulse that part 71 supplies to the AC energy of band clutch motor 60 from electric energy.
If can not provide switching signal in the setting-up time section of cam 600 after band clutch motor 60 is started working, microcomputer 100 will cut out band clutch motor 60, and band clutch motor 60 is turned round once more, and detect cam 600 once more and whether can provide switching signal.If cam 60 still can not provide switching signal, microcomputer 100 turns round band clutch motor 60 once more with repeating and detects the step whether cam 600 can provide switching signal once more.If even if cam 600 repeats still can not provide switching signal after the setting-up time section in this step, microcomputer 100 just determines that clutch 6 is undesired.Then, microcomputer 100 provides control signal, to show the error message or the signal of sounding.That is to say that microcomputer 100 calculates the number of times that cams 600 can not provide switching signal, if the number of times that calculates greater than set point number, microcomputer 100 just makes display part 700 show error messages, or the signal of sounding.
When cam 600 normally produced switching signal, microcomputer 100 utilized the step-by-step counting of step-by-step counting part 72, made band clutch motor 600 continue to drive setting-up time sections.Also promptly, band clutch motor 600 will be continued to drive the umber of pulse that reaches setting up to the umber of pulse of being calculated.
Below, will illustrate respectively at two kinds of patterns for the method for clutch fault in the detection washing machine that proposes according to a first advantageous embodiment of the invention.Wherein a kind of pattern is to adopt stir mode in washing or during rinsing, and another pattern adopts the rotating cylinder pattern during for rotary dehydration.
Be used for changing in the method for power transfer mode of washing machine, also description be transformed into the step of pulsator mode.
Referring to Fig. 8, under the control of microcomputer 100, BLDC motor 7 is in moment, with the corner less than when washing corner, in left and right directions alternate rotation N time (as twice) or rotate a setting-up time (to three second) (step S11).
In step S11, BLDC motor 7 is used to eliminate the factor that coupling 15 moves up that hinders in the left and right directions alternate rotation.Move the profile of tooth that is subjected to being applied to rotating shaft 5 bottoms on the coupling 15 by profile of tooth 150a and 150b, with the obstruction of surface pressing on the profile of tooth 161b on female connector 16b top, this pressure when relative direction is stopped by washing machine and the rotating shaft 5 of coupling 15 engagements and the opposite force of interior coupling 16b cause.Therefore, carrying out this step so that before moving on to the position of washing mode on the coupling 15, BLDC motor 7 hinders the factor of moving on the coupling 15 in the left and right directions alternate rotation with elimination.
Then, microcomputer 100 brings into operation band clutch motor 60, with rotating cam 600 (step S12).Then, whether microcomputer 100 sense switches 650 open (step S13) by the rotation of cam 600.The gear teeth 151 that mean coupling 15 of opening of switch 650 are meshed with the gear teeth 221 that connect brake 22.Therefore, by the open mode of sense switch 650, can know whether the gear teeth 151 of coupling 15 mesh with the gear teeth 221 that connect brake 22.
Then, as the testing result among the step S13, open if detect switch 650, step-by-step counting part 72 supplies to the alternating voltage pulses number on the band clutch motor 60 when being in open mode with regard to compute switch 650.Then, whether microcomputer 100 definite umber of pulses of being counted are greater than the umber of pulse of setting, as " 66 " (step S14).
As the testing result among the step S14, if the umber of pulse of being counted is less than the umber of pulse of setting, process turns back to step S13.Then, repeating step S13 and step S14 are equal to or greater than the umber of pulse of setting up to step-by-step counting.When step S13 and step S14 repeated like this, band clutch motor 60 continued to drive.Therefore, the gear teeth 151 of coupling 15 are more reliable with the engagement of the gear teeth 221 that connect brake 22.
In contrast, as the testing result of step S14, if the step-by-step counting of alternating voltage is equal to or greater than the setting umber of pulse, band clutch motor 60 just stops (S15), and BLDC motor 7 is under the control of microcomputer 100, moment inherent left and right directions alternate rotation (S16).In this case, BLDC motor 7 is with an angle less than when washing angle, in left and right directions alternate rotation N time (as twice) or rotate a setting-up time (as to three second).The left and right directions alternate rotation be for twice for prevent BLDC motor 7 at the gear teeth 151 of coupling 15 with the gear teeth 221 that connect brake 22 because machinery or electrical fault, the state that engagement is not finished is entry into service in advance down.
Simultaneously, as the testing result of step S13,, detect from the time of band clutch motor 60 entrys into service and light through one first setting-up time section for example 7 seconds (step S17) if switch 650 is not opened.
Then, as the testing result of step S17, if passed through the first setting-up time section, as long as failure, microcomputer 100 adds " 1 " (the switch opens frequency of failure) (step S18) just for " M ".And whether detection " M " is equal to or greater than " N " (set point number is as four times) (step S19).
As the testing result of step S19, if " M " is not equal to or greater than " N ", band clutch motor 60 is just closed one second setting-up time section, for example one second (step S20) then, makes band clutch motor 60 entry into service once more (step S12).
Simultaneously, as the testing result of step S19, if " M " is equal to or greater than setting " N ", microcomputer 100 just makes display part 700 show error message (step S21).That is to say, be equal to or greater than set point number " N " if switch 650 is opened the number of times of failure, microcomputer 100 just determines that cam 600 or switch 650 are undesired, and shows error message on display part 700.
In the method that is used for switching washing machine medium power transfer mode of the present invention, also description is switched to the step of rotating cylinder pattern.
Referring to Fig. 9, under the control of microcomputer 100, in 7 moments of BLDC motor with less than washing the time corner of corner, in left and right directions alternate rotation N time (as twice) or rotate a setting-up time (to three second) (step S31).
Among the step S31, BLDC motor 7 is used to eliminate the factor that coupling 15 moves up that hinders in the left and right directions alternate rotation.Move on the coupling 15 and be subjected in an opposite direction by profile of tooth 150a and 150b, be applied to the obstruction of the pressure on the surface on the profile of tooth 161b on the profile of tooth of rotating shaft 5 bottoms and interior coupling 16b top, this pressure by the HHHH with the rotating shaft 5 of coupling 15 engagements and interior coupling 16b intersect (HHHH crossing) cause.Therefore, before making the step that moves on to the washing mode position on the coupling 15, BLDC motor 7 hinders the factor of moving on the coupling 15 in the left and right directions alternate rotation with elimination.
Then, microcomputer 100 is started working band clutch motor 60, with rotating cam 600 (step S32).Then, whether microcomputer 100 sense switches 650 close (step S33) by the rotation of cam 600.The gear teeth 151 that mean coupling 15 of closing of switch 650 are not meshed with the gear teeth 221 that connect brake 22.Therefore, by the closed condition of sense switch 650, can know whether the gear teeth 151 of coupling 15 throw off with the gear teeth 221 that connect brake 22.
Then,, close, when step-by-step counting part 72 is in closed condition with regard to compute switch 650, supply to the umber of pulse of the alternating voltage on the band clutch motor 60 if determine switch 650 as the testing result among the step S33.Then, whether microcomputer 100 detects the umber of pulse counted greater than the umber of pulse of setting, as " 66 " (step S34).
As the testing result among the step S34, if step-by-step counting is less than the umber of pulse of setting, process turns back to step S33.Then, repeating step S33 and step S34 are equal to or greater than the umber of pulse of setting up to step-by-step counting.When step S33 and step S34 so repeat, continue rotating band clutch motor 60.Therefore, the gear teeth 151 of coupling 15 are more thorough with the disengaging meeting of the gear teeth 221 that connect brake 22.
In contrast, testing result as step S34, if the step-by-step counting of alternating voltage is equal to or greater than the setting umber of pulse, band clutch motor 60 will stop (S35), and BLDC motor 7 can be at left and right directions alternate rotation (S36) in control following moment of microcomputer 100.In this case, BLDC motor 7 is with an angle less than the washing angle, in left and right directions alternate rotation N time (as twice) or rotate a setting-up time (as to three second).The left and right directions alternate rotation be for twice for prevent BLDC motor 7 at the gear teeth 151 of coupling 15 with the gear teeth 221 that connect brake 22 because machinery or electrical fault, the state that engagement is not finished is entry into service in advance down.
Simultaneously, as the testing result of step S33,, measure from the time of band clutch motor 60 entrys into service and light through the first setting-up time section for example 7 seconds (step S37) if switch 650 is not opened.
Then, as the testing result of step S37, if through the first setting-up time section, each failure, microcomputer 100 just increases " 1 " (step S38) with " M " (switch opens frequency of failure), and whether detection " M " is equal to or greater than set point number " N " (for example, four times) (step S39).
As the testing result of step S39, if " M " is not equal to or greater than set point number " N ", band clutch motor 60 is just closed one second setting-up time section, for example one second (step S40) then, makes band clutch motor 60 entry into service once more (step S32).
Simultaneously, as the testing result of step S39, if " M " is equal to or greater than set point number " N ", microcomputer 100 just makes display part 700 show an error message (step S41).That is to say that if the number of times of switch 650 Fail-closeds is equal to or greater than set point number " N ", microcomputer 100 just determines that cam 600 or switch 650 are undesired, and shows error message on display part 700.
Therefore, being used to according to a first advantageous embodiment of the invention detected the method for the fault of clutch, when being transformed into pulsator mode or rotary barrel pattern, washing machine can detect the clutch fault, the infringement that causes by the fault of clutch can be prevented, and stable pattern conversion can be carried out washing machine.
Second embodiment
Figure 10 shows the block diagram of a kind of device of the fault that is used to detect clutch according to a second, preferred embodiment of the present invention, and the flow chart of Figure 11 shows the step of method that detects the fault of clutch according to second preferred embodiment of the present invention being used to of proposing.
Referring to Figure 10, the method that is used for detecting the fault of washing machine clutch comprises key input part 110, be used for inputting user command, microcomputer 200, be used to provide the control signal that is used for user command by key input part 100 inputs, motor 7 and clutch 6, be used to respond from the control signal of microcomputer 200 and drive, speed sensitive part 120 is used for the rotating speed of detection-sensitive motor 7, electricallyerasable ROM (EEROM) (EEPROM) 130, be used to store the operation and the function program of washing machine, and display part 700, be used to respond control signal from microcomputer 200, show information to the user.
In the device of the fault of the detection clutch that second preferred embodiment according to the present invention proposes, as user during to key input part 10 input operation orders, microcomputer 200 senses this order, to various loads, provide this control signal as motor 7 and clutch 6, so that the washing machine running.
In the washing machine course of work, if the user to key input part 110 input brake orders, microcomputer 200 senses this brake command, to these control signals of motor 7 input, thereby with the speed drop of motor 7 to the minimum speed of setting.
When the rotating speed of motor 7 dropped to the minimum speed of setting, microcomputer 200 just definite motors 7 had been braked, and detected the acceleration again in the predetermined amount of time of motor 7 after finishing from the braking that detects motor 7.Even because may occur owing to clutch 6 not normal cause when motor 7 brakings in a bucket 2b (see figure 1) still rotate, cause the situation that motor 7 quickens again.Therefore, if motor 7 accelerates to a specific speed again in the setting-up time section, just can determine that clutch 6 is undesired, abnormal situation of clutch 6 will be shown in display part 700.
Below, will the method that detect the fault of washing machine clutch according to second preferred embodiment of the present invention being used for of proposing be described.
Referring to Figure 11, when the user will wash, rinsing, or washer operation order 110 such as rotary dehydration is when being input to key input part 100, and microcomputer 200 provides control command, with the running (step S51) of beginning user command.
In the operating process of user command, microcomputer 200 detects whether input brake order (step S52) of users.
As the testing result of step S52, imported brake command if detect, microcomputer 200 is reduced to the minimum speed (step S53) of setting with the rotating speed of motor 7, and then, microcomputer 200 detects motors 7 brakings and whether finishes (step S54).
As the testing result of step S54, to finish if detect the braking of motor 7, microcomputer 200 detects whether pass through preset time section (step S55).
Then, as the testing result of step S55, if determine not pass through predetermined amount of time, microcomputer 200 detects motor 7 and whether quickens (S56) again.
As the testing result of step S56, be before the process setting-up time if detect the acceleration again of motor 7, microcomputer 200 just determines that clutches 6 are undesired so, and shows clutch error message (step S57) on display part 700.In this case, with the clutch error message, also can show the clutch maintenance request message.
Simultaneously, as the testing result of step S52, do not have the input brake order if detect, so, the process of setting according to the user continues operation (step S58).
Therefore, in the detection washing machine that proposes according to a second embodiment of the present invention in the apparatus and method of clutch fault, when the user in operating process during the input brake order, if clutch does not have not normal, can be reduced to the minimum speed of setting along with rotating speed, and finish braking, and if clutch 6 damages or is not normal, just can detect the acceleration again of motor 7 in the setting-up time section when braking is finished in speed sensitive part 120.
Again quickened if detect motor 7, microcomputer 200 just determines that clutches 6 are destroyed or not normal, and shows the generation that clutch 6 is not normal on display part 700, and the user can take rapid measure according to displaying contents.
The 3rd embodiment
Figure 12 shows the block diagram of device that detects the fault of clutch according to the 3rd preferred embodiment of the present invention being used to of proposing, and below with reference to this figure, describes the device that detects the fault of clutch according to the 3rd preferred embodiment of the present invention being used to of proposing.
Referring to Figure 12, this device that is used to detect the clutch fault comprises that electric energy supplies with part 71; Motor-driven part 310; Be used to receive the voltage of supplying with part 71 from electric energy, and drive motors 7; Clutch drive part 330 is used for rotating band clutch motor 6, with the position of the coupling 15 (seeing Fig. 2 A and 2B) of solenoidoperated cluthes 6; Coupling location sensing part 340 is used for the position of sensing coupling 15; Voltage sensing part 320 is connected to the input of motor-driven part 310, is used for sensing and supplies with part 71 from electric energy and supply to voltage on the motor-driven part 310; Microcomputer portion 300 is used to control motor-driven part 310 and clutch drive part 330, thus operating electrical machines 7 and clutch 6, and if the voltage that senses by voltage sensing part 320 be higher than setting voltage, can be understood as the clutch fault; And display part 700, be used for showing the error message of clutch according to control signal from microcomputer 300.
In the present invention, when washing machine was driven under the bucket rotation mode, microcomputer 300 was added in voltage on the motor-driven part 310 by voltage sensing part 320 sensings.In this case, shown in Figure 13 B, under the bucket rotation mode, move on the coupling 15, the outer bucket 13 on making coupling 15 and being connected to wash bucket 2b engages, so that the rotational power of motor 7 is delivered to agitator 3 and wash bucket 2b.
Under the bucket rotation mode, wherein clutch coupling 15 engages with outer bucket 13, be delivered to agitator and washtub with rotational power with motor 7, if clutch coupling 15 damages or not in the normal position, cause clutch coupling 15 and the outer bucket 13 can not normal engagement, just produce the voltage that is higher than normal condition in the opposite end of motor-driven part 330.
If the voltage that senses is higher than normal condition improperly, also, if break down owing to clutch coupling 15 damages, microcomputer 300 just provides a control signal to display part 700, to show error message.
The method that is used for detecting the washing machine fault that proposes according to the 3rd preferred embodiment of the present invention is described below.
Referring to Figure 14, microcomputer 300 detects whether work at present is under the bucket rotation mode (step S61).
Testing result as step S61, if detect current running not under the bucket rotation mode, microcomputer 300 just makes band clutch motor 60 entrys into service, so that clutch coupling 15 is separated with outer barrel 13, and makes washing machine work (step S62) under the wheel rotation pattern.As shown in FIG. 13A, under the wheel rotation pattern, for the rotational power with motor 7 only is delivered to agitator 3, clutch coupling 15 and outer bucket 13 are separately.
In contrast, as the testing result of step S61, be in a barrel rotation mode if detect current operation, voltage sensing part 320 senses a direct current voltage (step S63) in the opposite end of motor-driven part 330.
Whether then, microcomputer 300 receives these voltages by the A/D input port from voltage sensing part 320, and detect this level and be lower than and set level (step S64).
As the testing result of step S64, if detected voltage is lower than setting voltage, microcomputer 300 will continue this barrel rotation mode (step S65).
In contrast; as the testing result of step S64, if detected voltage is higher than setting voltage, microcomputer 300 will be thought that clutch coupling 15 is undesired or damage (step S66); and on display part 700, show error message, the signal of perhaps sounding (step S67).
Therefore, when washing machine was in barrel rotation mode, if the voltage on the relative input of motor-driven part 310 exceeds improperly, so, the present invention can show the error message of the fault that the damage owing to clutch coupling 15 causes.
Commercial Application
As previously mentioned, the apparatus and method that are used for detecting the fault of washing machine clutch can be by detecting the not normal of clutch, and notify the user with measurement result, prevent the damage and the fault of clutch, like this, owing to can avoid the washtub that fault or damage owing to clutch cause or the non-normal working of dehydration barrel, reduced danger to the user.
Although invention has been described with reference to the preferred embodiments and illustration, obviously, for a person skilled in the art, under the prerequisite that does not deviate from the spirit and scope of the present invention, can make various changes and variation to the present invention.Therefore, various change of the present invention, the content that changes by appending claims and equivalent thereof contain.
Claims (13)
1. device that is used for detecting washing machine clutch fault, comprising: clutch comprises:
Coupling is used for selectivity motor power is delivered to wash shaft or rotating shaft, and the band clutch motor is used to drive described coupling, and
Cam is pivotally mounted on the described band clutch motor, and being used for the response rotation provides switching signal;
Electric energy is supplied with part, is used for to described band clutch motor service voltage;
The step-by-step counting part is used to calculate from described electric energy and supplies with the potential pulse number that partly supplies on the described band clutch motor; And
Microcomputer, be used for repetition one process, in this process, if described cam can not provide switching signal in the first setting-up time section, described band clutch motor just stops one second setting-up time section, and then running, and if the number of repetition that lasts till described process equals or during more than set point number, still can not provide described switching signal, just determine that described clutch breaks down.
2. device according to claim 1, wherein, in the described first setting-up time section, provide at described cam under the situation of switching signal, the described band clutch motor of described micom drives is till the umber of pulse that described step-by-step counting is partly calculated reaches default umber of pulse.
3. device according to claim 1, wherein, the described band clutch motor of described Microcomputer Calculation stops described second a setting-up time section, and then the number of repetition of the process of running, and described number of repetition is compared with described set point number.
4. device according to claim 1, wherein, before making the entry into service of described band clutch motor, described microcomputer makes described motor in the left and right directions alternate rotation repeatedly.
5. device according to claim 1, wherein, before described band clutch motor was stopped, described microcomputer made described motor in the left and right directions alternate rotation repeatedly.
6. device according to claim 1 also comprises a display part, is used in the send a notice fault of described clutch of described system controlled by computer.
7. method that is used for detecting washing machine clutch fault, described clutch comprises: a coupling, be used for selectivity motor power is delivered to wash shaft or rotating shaft, the band clutch motor, be used to drive described coupling, and cam, be pivotally mounted on the described band clutch motor, being used for the response rotation provides switching signal, and described method comprises the steps:
(a) make the entry into service of described band clutch motor, to rotate described cam;
(b) detect described cam whether switching signal is provided;
(c) repeat a process, if described cam can not provide described switching signal in the first setting-up time section in described process, described band clutch motor just stops one second setting-up time section, and then running, and
(d) when repeating described process,, show error message if described cam still can not provide switching signal above set point number.
8. method according to claim 7 before making the entry into service of described band clutch motor, also comprises making described motor in left and right directions alternate rotation step repeatedly.
9. method according to claim 8, wherein, the step of the described motor of described rotation also comprises with less than the washing or the step of the described motor of angular turn of motor corner during rinsing.
10. method according to claim 7, in the described first setting-up time section, described cam provides under the situation of described switching signal, also comprises driving described band clutch motor, reaches the step that is higher than the predetermined pulse number up to the potential pulse number that is added on the described band clutch motor.
11. method according to claim 7 also comprises the steps:
Calculate described band clutch motor and stop described second a setting-up time section, and then the number of repetition of the process of running, and
The described number of repetition of calculating is compared with set point number.
12. device according to claim 1, wherein the described switching signal that is provided by described cam is an opening signal when washing or rinsing, is shutdown signal when the dehydration rotation.
13. whether whether whether method according to claim 7, the described cam of wherein said detection provide the step of switching signal to comprise the steps: to detect described switching signal is opening signal in washing or during rinsing and is shutdown signal during in the dehydration rotation.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0027132A KR100474903B1 (en) | 2002-05-16 | 2002-05-16 | Method and apparatus for sensing motor error of washing machine |
| KR1020020027132 | 2002-05-16 | ||
| KR1020020073611 | 2002-11-25 | ||
| KR10-2002-0073611A KR100469273B1 (en) | 2002-11-25 | 2002-11-25 | Apparatus and Method for Sensing Operation Error of Clutching of Washing Machine |
| KR10-2002-0074057A KR100493301B1 (en) | 2002-11-26 | 2002-11-26 | method for switching driving power transmission mode of washing machine |
| KR1020020074057 | 2002-11-26 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101372072A Division CN101556210A (en) | 2002-05-16 | 2003-05-16 | Device and method for detecting wrong operation of motor in washing machine |
| CN200610086465A Division CN100580169C (en) | 2002-05-16 | 2003-05-16 | Apparatus and method for detecting malfunction of clutch of washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1547633A CN1547633A (en) | 2004-11-17 |
| CN1293249C true CN1293249C (en) | 2007-01-03 |
Family
ID=29554013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038009250A Expired - Fee Related CN1293249C (en) | 2002-05-16 | 2003-05-16 | Apparatus and method for detecting malfunction of a clutch of washing machine |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US7409737B2 (en) |
| EP (1) | EP1504147B1 (en) |
| JP (2) | JP2005525889A (en) |
| CN (1) | CN1293249C (en) |
| AU (1) | AU2003230430B2 (en) |
| DE (1) | DE60312320T2 (en) |
| ES (1) | ES2282622T3 (en) |
| WO (1) | WO2003097921A1 (en) |
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| CN101173474B (en) * | 2006-11-01 | 2011-11-30 | 海尔集团公司 | Method for checking failures of washing machine electric motor loop and clothes amount detection circuit |
| JP4924672B2 (en) * | 2008-07-23 | 2012-04-25 | 株式会社デンソー | Rotation detection device signal processing circuit |
| KR20100083507A (en) * | 2009-01-14 | 2010-07-22 | 삼성전자주식회사 | Coupling for washing machine and washing machine having the same |
| US8037563B2 (en) * | 2009-03-24 | 2011-10-18 | Hill-Rom Services, Inc. | Multiple air source mattress control system |
| KR101422570B1 (en) * | 2009-07-31 | 2014-07-25 | 삼성전자 주식회사 | Washing machine and control method the same |
| JP5390480B2 (en) * | 2010-07-06 | 2014-01-15 | 株式会社東芝 | Combined washing machine |
| US8857227B2 (en) | 2012-02-13 | 2014-10-14 | General Electric Company | Status sensor for a clutch on a washing machine appliance |
| US9708747B2 (en) * | 2012-09-13 | 2017-07-18 | Haier Us Appliance Solutions, Inc. | Assembly and method for shifting between modes of operation for a washing machine appliance |
| US9328445B2 (en) | 2012-12-19 | 2016-05-03 | General Electric Company | Mode shifter with a leaf spring yoke for a washing machine appliance |
| CN104101496B (en) * | 2013-04-09 | 2017-08-25 | 广东美的制冷设备有限公司 | The fault detect of air-conditioning system and its transmission mechanism and control method, control device |
| KR102148200B1 (en) * | 2013-09-04 | 2020-08-27 | 삼성전자주식회사 | Washing apparatus and controlling method thereof |
| JP6444622B2 (en) * | 2014-06-12 | 2018-12-26 | アクア株式会社 | Drum washing machine |
| KR102279071B1 (en) * | 2014-10-17 | 2021-07-20 | 삼성전자주식회사 | Washing Machine, Method for Controlling Washing Machine and Computer-readable Recording Medium |
| JP6777379B2 (en) * | 2015-04-10 | 2020-10-28 | 東芝ライフスタイル株式会社 | Washing machine |
| CN106592163B (en) * | 2015-10-15 | 2021-03-23 | 合肥海尔洗衣机有限公司 | Washing machine speed reduction clutch control method, speed reduction clutch and washing machine |
| CN111197240B (en) * | 2018-10-30 | 2022-05-17 | 合肥美的洗衣机有限公司 | Washing machine motor fault detection method and device and washing machine |
| JP7230674B2 (en) | 2019-05-08 | 2023-03-01 | 株式会社デンソー | motor controller |
| CN112481928B (en) * | 2020-12-18 | 2022-11-11 | 惠而浦（中国）股份有限公司 | Control method for temperature rise of motor and washing machine |
| KR102534479B1 (en) * | 2021-04-28 | 2023-05-26 | 엘지전자 주식회사 | Laundry treating appratus and controlling method thereof |
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- 2003-05-16 DE DE60312320T patent/DE60312320T2/en not_active Expired - Lifetime
- 2003-05-16 WO PCT/KR2003/000971 patent/WO2003097921A1/en active IP Right Grant
- 2003-05-16 ES ES03723474T patent/ES2282622T3/en not_active Expired - Lifetime
- 2003-05-16 JP JP2004505430A patent/JP2005525889A/en active Pending
- 2003-05-16 CN CNB038009250A patent/CN1293249C/en not_active Expired - Fee Related
- 2003-05-16 AU AU2003230430A patent/AU2003230430B2/en not_active Ceased
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2008
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Also Published As
| Publication number | Publication date |
|---|---|
| EP1504147A1 (en) | 2005-02-09 |
| JP2005525889A (en) | 2005-09-02 |
| AU2003230430B2 (en) | 2006-04-27 |
| DE60312320D1 (en) | 2007-04-19 |
| ES2282622T3 (en) | 2007-10-16 |
| WO2003097921A1 (en) | 2003-11-27 |
| US20040261197A1 (en) | 2004-12-30 |
| AU2003230430A1 (en) | 2003-12-02 |
| JP2009195719A (en) | 2009-09-03 |
| CN1547633A (en) | 2004-11-17 |
| US7409737B2 (en) | 2008-08-12 |
| DE60312320T2 (en) | 2007-11-08 |
| US20080263784A1 (en) | 2008-10-30 |
| EP1504147B1 (en) | 2007-03-07 |
| JP4741690B2 (en) | 2011-08-03 |
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